A DNS client provides a host name, and the DNS resolver must provide an answer. This query is called a/an ________.

A DNS client provides a host name, and the DNS resolver must provide an answer. This query is called a/an ________.

• A. Iterative
• B. Cache query
• C. Recursive
• D. Non-iterative

Answer: (C)

The question is about recursive DNS queries. When a DNS client asks for a host name and the resolver provides the final answer, the resolver takes on the full task of resolving the name for the client. It does the necessary lookups across the DNS hierarchy (root servers, TLD servers, authoritative servers) and returns the definitive result to the client. This contrast with iterative resolution, where the resolver passes referrals back to the client and the client continues querying. Cache query and non-iterative aren’t standard terms for this behavior.

The question is about recursive DNS queries. When a DNS client asks for a host name and the resolver provides the final answer, the resolver takes on the full task of resolving the name for the client. It does the necessary lookups across the DNS hierarchy (root servers, TLD servers, authoritative servers) and returns the definitive result to the client. This contrast with iterative resolution, where the resolver passes referrals back to the client and the client continues querying. Cache query and non-iterative aren’t standard terms for this behavior.